Asphalt-mixing machine



(No Model.) 2 SheetsSheet I. G. WINDING. ASPHALT MIXING MACHINE.

No. 490,218. Patented Jan. 17, I893.

1m 'HIH HHHHHHHIM .:E H "a l V Z'twass Q8 @911. my 5. ,B p% M (No Model.) 2 Sheets-Sheet 2.

G. WINDING. ASPHALT MIXING MACHINE.

No. 490,218. Patented Jan. 17, 1893.

4 ,5" V VIM/asses ln/uew/towmm s ----- ms mama vcrsns co, moraumo, wnqmamu. o. c.

Unrrsn STATES ATENT ASPHALT-MIXING MACHINE.

SPECIFICATION forming part of Letters Patent No. 490,218, dated January 17, 1893.

I Application filed October 29, 1887. Serial No. 253,686. (No model.) I

To all whom it may concern:

Be it known that I, GEORGE WINDING, of Milwaukee, in the county of Milwaukee, and in the State of Viisconsimhave invented certain new and useful Improvements in Machines for Mixing Asphalt; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to machines for mixing asphalt being an improvement on my patent No. 295,707, dated March 25, 1884, and it consists in certain peculiarities of construction and combination of parts to be hereinafter described with reference to the accompanying drawings and subsequently claimed.

In the drawings: Figure 1represents an elevation of one side of my machine, Fig. 2 a similar view of the opposite side, Fig. 3a rear end elevation, Fig. 4-a section taken on line JP-4c Fig. 5, and Fig. 5-a longitudinal vertical section of the mixing cylinder, the boiler being in elevation and partly broken away.

Referring by letter to the drawings A represents a fire box that is preferably deepest at its rear end, and in this deep portion is located a grate B to which fuel is supplied through a suitable opening in the rear wall of the fire box, said opening being normally closed by a door a. Below the door a is another door 19 that closes an opening through which to insert a poker for stirring the fire in the grate. As shown in Fig. at, the fire box A is preferably double walled to form a dead air space 0 in order to prevent excessive heating of the outermost walls, and at its front end said fire box has an opening that communicates with a smoke box G that has hinged thereto asmoke stack D.

The outer walls of the tire boxA are braced by irons Z) and have double right angle flanges d at their upper ends as shown in Fig. 4, and between these flanges and the upper ends of the adjacent inner walls are inserted lateral flanges c belonging to the bottom section E of a mixing cylinder that forms part of my machine, the upper section E of this cylinder being offset as shown at f to fit over the verticalportions of the double right angle flanges of said outer walls of the fire box and also provided with flanges to fitover the heads of said cylinder. The upper section E of the mixing cylinder is provided on each side with a door g that is held in its closed position by pivoted latches g and this upper section is held down upon the lower sectionE by means of hasps 7t and staples h respectively secured to said sections. The upper section E of the mixing cylinder is also provided with handles 2', and lines j that have dampers j arranged therein, and to the rear end of said section is secured a rest 1.: that supports the smoke stack D when the latter is not in use. To the top of the fire box A in front and rear of the mixing cylinder are secured sockets m for the lower ends of removable cranes F that have suspended therefrom pulley blocks'n through which are reeved chains or cables n fastened to the upper section E of said cylinder. By means of the chains or cables the upper section E of the mixing cylinder can be lifted and suspended when it is desirable to clean out said cylinder.

Arranged in bearings 13 on the fire box A is a shaft G that extends through the mixing cylinder and has secured thereto a series of paddles or stirrers G". The mixing cylinder has an outlet g at its front end and this outlet is closed by a pivoted gate q.

A platform A extends rearward from the fire box A and is braced by stay rods 7'. On the platform is arranged an upright steam boiler H and an engine I, said boiler and engine being connected in the usual manner. The water for the boiler is supplied by a steam pump K suitably secured to one side of the fire box A and having the usual connections with said boiler. The pump K is connected at s by means of a hose or pipe to a tank or other source of Water supply, the Water on its Way to the boiler I-I being forced through pipes L M arranged in the fire box A and is thus heated to a certain degree prior to reaching said boiler thereby enabling me to get up and maintain steam with but little expense for fuel to supply the furnace H of said boiler.

The piston I of the engine 1 is connected to a pitman N that is in turn connected to a crank shaft 0, the latter being arranged in bearings t 6 respectively secured to the rear head of the mixing cylinder and extended up from the engine, said shaft being provided with a fly wheel 0 and eccentrically cen-'"" \nected to the valve rod 1 ofsaid engine. 7 The crank shaft carries a worm P that meshes with a Worm w'heclQ on the stirrer shaft G, said worm wheel being revolved in a trough Q kept filled with greasy water to serve as alubricant and cooling medium, said trough being provided with a cock u for the purpose of drawing off the Water.

'Rigidly secured to the outer sides of the .fire box A near its rear end are angle plates R R that are strengthened by webs v and have their lower lateral portions 1; provided upon the underside with lugs 0 My machine is provided with a rear axle S that has each end thereof provided with a vertical standard 10 and horizontal ears w, the latter having lugs w upon their upper sides. The vertical standards w at the ends of the axle IS are arranged to have vertical play between axle S of my machine has no rigid connection with the fire box A, and the springs U serve to keep it normally out of contact of said box,

as best illustrated in Fig. 4, the distance be-.

ing determined by the length and stiffness of said springs. V

Pivotally connected to the fire box A beneath its lower front portion is an axle V that carries Wheels WV, the latter being preferably of such diameter as to readily pass under said fire box to facilitate moving of the machine. In order to compensate for the strain on the front axle V, I connect the same by means of a rod V with the front of the deepest portion of the fire box A, and hence the pull will be communicated through this rod to the rear portion of the machine. Detachably connect ed to lugs g on the front axleV are the hounds X for a tongue Z.

By the construction above described it will be seen that I provide a very simple and compact machine for mixing asphalt and that said machine can be readily moved from place to place.

Heretofore power had to be communicated to the stirrers of my machine from an independent engine located frequently at some distance therefrom, and fed from an independent pump and this greatly interfered As will with the convenience and usefulness of my device, to overcome which objections I have devised the compact, complete and portable machine above described, the use of which results in great economy of time and labor, besides rendering it independent of outside aid in its operation.

has been foundunsatisfactory because the as phalt is liable to cool to such a degree thatit can not be successfully laid to obtain the best results.

A machineof the construction above described can be taken to the place where it is desired to lay the asphalt, and the power for actuating the stirrers being a part of the machine, the mixing takes place at the point of deposit,rthereby permitting said asphalt to be worked in its most plastic state thus enabling V me to do better work in less time and with less labor than is ordinarily the case in the art to which my invention relates.

Having now fully described my invention what I claim as new and desire to secure by Letters-Patent is:

1. In a machine for mixing asphalt, the

combination of a double walled fire box hav- 7 ing its outer walls provided with the double. right angle flanges d, a sectional mixing cylinder having its lower section provided with the lateral flanges e inserted between said flanges d and the upper edges ofthe adjacent inner walls, and the upper section of the cylinder provided with the ofisets f, substantially asset forth.

2. A' portable asphalt mixing machine that comprises a fire-box mounted on wheels and provided with a platform, a steam-boiler and engine mounted on the platform, a pump supported on the fire-box and connected to the engine, feed pipes leading from the pump through the fire-box into the boiler, a mixing cylinder dependinginto said fire-box, a stirrer in the cylinder, and a gear-connection between the engine and; stirrer, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of WViscousin, in the presence of two witnesses.

GEO. WVINDING.

Witnesses:

H. G. UNDERWOOD, N. E. OLIPHANT. 

